from collections import Counter

s = "sa da da"
print(s.split(" "))
count = Counter(["as", "as", "bs"])
for k in count.keys():
    print(k)
set1 = {1, 2, 3}
set2 = {2, 3, 4}
print(set1 ^ set2)
set1 = set()
print(type(set1))
print("--"*100)
print(ord('A')-64)
print(2**3)

for i in range(5,-1,-1):
    print(i)
